This is not a jqgrid problem.

Try this in your web.config file :

prdpjb,

Sorry if my sentence was rude, it was not the intention.

What I was tried to say was that here you will find a lot of people knowing and trying to know about jqgrid.

Your error is more about asp.net. I advise you to look for the solution in asp.net forums for example. You may be luck to find the solution here, but I think that is not the best place to search for a solution.

In fact, as you said it worked it your test web server. Usually the production server have some limitations/especific configurations. This seems a IIS configuration or something missed in your web.config

You will find a lot of similar problems searching at google.

Let us know when you solve our problem 😉

Good luck,